[R] table lookup n R

Don MacQueen macq at llnl.gov
Wed Jul 14 16:35:02 CEST 2004


There is also the match() function, and the %in% operator, either of 
which might do the job, depending on your exact details. For example,

    (1:26)[letters %in% c('x','t','j')]

-Don

At 2:34 PM +0200 7/13/04, Anne wrote:
>Hello R helpers!
>I looked  but did not find a table-lookup R-utility. I could use a 
>loop to do the job (old FORTRAN/C habits die hard) but if I have a 
>big table in which I have to search for the values corresponding to 
>a vector, I end up logically with a double loop.
>Is there already such a utility? Otherwise, is there a way without loops?
>
>Thanks as always
>Anne
>----------------------------------------------------
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-- 
--------------------------------------
Don MacQueen
Environmental Protection Department
Lawrence Livermore National Laboratory
Livermore, CA, USA




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